Brief to Territories to Rationale: A Four-Prompt Claude Chain That Carries One Corrected Brief

What This Builds

You take a creative brief and end up with a short problem statement, five territories to choose from, a rationale in your own voice, and a list of questions to expect from the creative director or client. All four steps run in one Claude conversation, so each step builds on the brief you corrected in step one. The model drafts the words. You pick the territory, and you rewrite whatever does not sound like you.

Level 1 prompts that turn a brief into concepts or a rationale work on one step at a time. This chain differs because one corrected brief travels through all four steps, and you stop to check after each one.

Prerequisites

• A Claude account. Free tier: Everyday Claude chat on web, mobile, and desktop with limited usage on Sonnet and Haiku; Opus and Fable models are not included on the Free plan.. The paid Pro plan is $20/month. Long conversations use more of your allowance, so check Claude's pricing page for current limits.
• A creative brief you can paste, and the client's approved claims list if there is one
• Total ongoing cost of the finished build: none beyond your Claude plan
• Permission to paste the brief (see below)

The Concept

Think of a junior who sits in on your first kickoff and takes notes. You do not hand them the work. You ask them to write back what they heard, and you correct it. Only then do you ask for ideas. A chain does the same thing. The model's second answer is only as good as the brief you confirmed in the first.

The checkpoints are the point. After each prompt you read the output against the source and fix it before pasting the next prompt. If you skip a checkpoint, an error in step one will be carried into the rationale in step three.

Before You Paste Anything

A creative brief is unreleased work: concepts, launch timing and campaign plans are confidential to the client or your company until launch, and many agency contracts and NDAs forbid sharing them with outside services. Check the agency's or company's AI policy, the client contract and Claude's data settings first (whether chats are used to improve the model and how long they are kept, which can differ between plans). If the policy says no, stop here.

If it is allowed, still replace the client name and the product name with code names ("Client A", "Project Lantern"), delete talent and contact names, and remove staff names. Keep the claims list as the client approved it, with nothing added, because the model must never invent one.

Build It Step by Step

Part 1: Open one conversation

Start a new Claude conversation and keep every prompt in it. If you will come back over several days, put the coded brief in a Claude Project instead, so the brief is there when you return. Do that only if your policy allows project files to hold client work. Do not paste the next prompt until you have done the checkpoint for the one before.

Reader notes that stay with you and never go into the prompts: code the names, strip people's names, and take any claim, legal line or budget question to the account team instead of asking Claude to settle it.

Part 2: Prompt 1, restate the brief

Paste your coded brief under this prompt.

Below is a creative brief. Restate it as a problem statement of no more than 80 words. Then list what is fixed and what is open.

Fixed: deliverables, mandatories, the approved claims the copy may use (copied exactly as written, with none added), and timing.
Open: anything the brief leaves to the creative team.

If the brief does not say something, write "not stated" instead of guessing. Do not suggest ideas yet.

Brief:
[paste the coded brief]

Checkpoint 1. Read the output against the brief, line by line. Check every deliverable, date and claim. Correct anything wrong or guessed, and move "not stated" items into a note for the account lead. Reply in the same conversation with the corrections: Corrections to the restated brief: [your corrections]. Use the corrected version from now on.

Part 3: Prompt 2, five territories

Using the corrected brief, give me 5 distinct creative territories. For each one:
1. A one-line idea.
2. The visual approach, in words only.
3. What it asks of production (shoot, illustration, retouching, print finishing, motion).
4. Any tension with the brand standards or mandatories in the brief.

Do not name any living artist, photographer or illustrator as a reference. Do not write headlines or product claims. Do not generate images. Describe the look in plain words.

Checkpoint 2. This one is yours to judge. Pick one territory, or combine two, using your eye. Add your own notes (what you would change, what excites you, what worries you). Check the production asks against what you know the budget and timeline allow. Reply: I choose territory [number]. My notes: [your notes].

Part 4: Prompt 3, the rationale

Write a rationale for the territory I chose, in my voice, for [the creative director / the client / the internal stakeholder]. Use my notes. Keep it to about [150 to 250] words in plain sentences, no hype. Use only facts from the corrected brief and my notes. Do not add a claim, a comparison, a statistic or a competitor. Do not name any living artist as a reference.

Checkpoint 3. Rewrite anything that does not sound like you. Cut any sentence you cannot defend in the room. Check every factual line against the brief, and make sure no claim crept in that is not on the approved list.

Part 5: Prompt 4, likely questions

List the questions the [creative director / client] is most likely to ask about this territory and rationale. For each, give a suggested answer drawn only from the corrected brief and the rationale. If an answer needs something that is not in either, write "not in the brief". Finish with a separate list headed "For the account team": any question that needs a product claim, a legal line, a budget or schedule answer, or a usage-rights answer.

Checkpoint 4. Read each suggested answer against the brief and the rationale. Where it says "not in the brief", leave it unanswered. Send the "For the account team" list to the account lead. Claims and legal lines go to the client's legal team through the account team, and budget answers come from the producer. In-house, send them to your marketing lead and legal contact.

Real Example: Project Lantern

Invented brief, with every name coded.

Prompt 1 returns a problem statement and a fixed/open list. Suppose it lists "four social cutdowns". The brief says three. At Checkpoint 1 you correct it: Deliverables are one hero layout and three social cutdowns, not four. It also lists "Folds flat" under open rather than fixed. You correct that too, since the claim is approved. Without that checkpoint, step three would have written a rationale for an extra deliverable.

Prompt 2 returns five territories. Suppose territory 3 asks for a night-shoot with practical lighting and territory 5 has a tension with the logo lockup. You choose 3, noting that the night shoot needs the producer's view on schedule. Prompt 3 gives you a draft rationale. You rewrite its opening so it sounds like your own presentations and delete a sentence calling the lantern "the brightest choice", because no approved claim says so. Prompt 4 lists likely questions, including "Can we say how long it lasts?" The model answers "not in the brief" and puts the question in the account-team list, which is correct.

Time saved: a first pass of territories and a rationale draft in the time you would spend on the notes. Your choice of territory and your edits are still where the work lives.

What to Do When It Breaks

• The model adds a claim → Delete it. Check the rationale and answers for any line about performance, comparison or "best". Only the approved claims list may appear.
• Step 2 returns five similar territories → Reply with Territories 2 and 4 are too close. Replace one with a territory that asks for something different from production.
• The conversation drifts or contradicts the corrected brief → Paste the corrected brief back in as a block and say Use only this version. Long conversations lose detail.
• The chain stops after a checkpoint and you come back days later → If you used a plain conversation, reopen it and paste the corrected brief again. If you used a Claude Project, the brief is in the project, but re-check that the corrections you made are saved there.
• Output names a living artist → Remove it and reply No named artists. Describe the look in plain words.

Variations

• Simpler version: Run only prompts 1 and 3, using your own territory.
• Extended version: Add a fifth prompt asking for a one-page summary of the territory for the production team, with the same checks.

What to Do Next

• This week: Run the chain on a live brief with the names coded, and compare your corrections to what you would have missed.
• This month: Save your four prompts in a note so you paste them in order.
• Advanced: Use the Level 4 review-round chain to turn the feedback on your rationale into a task list.

Advanced guide for art directors, agency or in-house. Any images or comps made with AI are for internal concepts and pitch scamps only unless legal and the client have cleared the tool for published work.